Guqula AAC kuya AMR

Guqula Eyakho AAC kuya AMR amafayela kalula

Khetha amafayela akho

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Ukulayisha

Indlela yokuguqula AAC kuya AMR

Isinyathelo 1: Layisha eyakho AAC amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho AMR amafayela

AAC kuya AMR Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiguqula kanjani umsindo AAC ube AMR ngaphandle kokulahlekelwa ukhwalithi?

Layisha phezulu ihele AAC futhi umguquli wethu uzokhetha i AMR codec / i-bitrate ehambisanayo necebo. Injongo engalahleki (AMR = WAV / FLAC / ALAC) igcina yonke isampula; injongo elahlekile (AMR = MP3 / AAC / OGG) iphutha liyi-192 kbps ecacile yencwadi yezwi elikhulumayo kanye neminye imiculo.

Ingabe ukushintsha AAC kuya ku AMR kuyingxenye yesithathu yokucindezela okulahlekile?

Yebo, futhi kufanelekile ukuhlela. Izifomethi zombili ziyi-lossy, ngakho-ke i-AMR encoder isebenza kusuka kumsindo osele udlulele engxenyeni eyodwa ye-psychoacoustic, futhi iziphakamiso zayo zihlanganisa isiqephu sokuqala. Ku-192 kbps noma ngaphezulu, imiphumela ihlala icacile kakhulu. Uma une-lossless master nganoma yikuphi, ukukopisha i-AMR kusuka kulo kunciphisa ukudluliswa okuphindiwe ngokuphelele. I-AAC ilahlekelwa yinto kodwa isebenza kahle kunayo i-MP3, futhi iphatha kuze kube yi-48 channels ngokusemthethweni ngaphezu kokuboshwa ku-stereo design. I-AMR iyi-narrowband speech codec esebenza phakathi kuka-4.75 no-12.2 kbps, emodela i-human vocal tract ngaphezu kwe-audio spectrum ephelele.

Ingabe izihloko zengoma yami nesithombe se-albhamu sizohlala isikhathi eside uma ngiguqula AAC kuya ku AMR?

Akulungile. AAC ifaka i-metadata efanele, kodwa AMR ayinaso isikhala esijwayelekile somuntu oculi, i-album, inani le-track noma umhlobiso we-cover, ngakho-ke amathegi asuswa ngaphandle kokulahleka. Gcina i-AAC njengekhophi eliphawulwe, noma phinda uphawule ngemuva ngethuluzi njenge Mp3tag noma MusicBrainz Picard. I-AMR ibulala umculo: i-8 kHz bandwidth yayo isusa konke okuphezulu kwe-frequency yefoni, futhi akukho inani lokuphindeka kokucofa liyibuyisela emuva.

Yini ekwenzeke kumsindo othile uma uguqula AAC ku AMR?

Ihlolwe phansi ku-stereo, ngoba AMR ayinayo indlela esebenzayo ye-multichannel. Ukuxuba okuphansi kusetshenziswa izilinganiso ezijwayelekile ukuze umhlangano we-channel ephakathi uhlale ucacile futhi izingqimba zixhunywe ku-level ephansi. Noma yini esekelwe ku-channel ehlukile ihamba lapho lokhu kwenziwa.

Kungani umculo uzwakala ubuhlungu kulo mguquko?

Ngenxa yokuthi ingxenye eyodwa iyi-codec yokuxoxa hhayi i-codec yomculo. Imodelisa i-human vocal tract futhi isusa konke okungaphandle kwe-bandwidth yefoni, okulungile ku-voice memo futhi kulahlekile kunoma yini enezithuluzi ngaphakathi. Ukushintshana eduze kwayo akukwazi ukubuyisela izifremu ezilahlekile — azikhombisile endaweni yokuqala. I-AAC ifakwe ipatenthi, futhi ama-players amasha ambalwa angeke avumeleke lapho befuna khona uku accetta i-MP3.

Ihele AMR lisebenzisa i-bitrate enjani?

Iphutha ngu-192 kbps ku AMR olahlekelwayo; udlulisa-nge- AMR ongenalutho. Nciphisa ku-320 kbps ku-audiophile noma ku-64-96 kbps ku-audiobooks ekhuluma-magama (icacile ku-voice, ihlukanise ubukhulu befayela ngamaphesenti).

Ingabe ukusuka ku AAC kuya ku AMR kuzonciphisa ubunjani bomsindo wami?

Uma AAC ilahlekelwa futhi AMR ayilahleki (isibonelo MP3 → WAV), ihele AMR alingcono kuna AAC — awukwazi ukubuyisela imininingwane esele ilahlekile. Uma AAC ilahlekelwa futhi AMR ayilahleki, cabanga ukuthi i-AMR codec izocindezela futhi; ku-192 kbps lokhu kucacile kunoma iyiphi ingxenye.

Ingabe i-AAC kuya ku-AMR igcina amathegi we-ID3 / metadata?

Yebo — isihloko, umculi, i-album, unyaka, inani le-track, i-album art, nama-chapter markers (abalulekile kuma-audiobooks) afundwa kusuka ku-AAC futhi abhalwe ku-AMR ibhokisi lapho i-AMR ifomu lixhasa amathegi. Ukwakhiwa kwe-audiobook M4B kuhamba-hamba ku-M4B ne-AAX → M4B output.

Ingabe ngingenza i-batch yokuguqula amahele angama-AAC abe AMR?

Yebo — susa isibaya se AAC amafayela ngaphakathi futhi sizoziphatha ngokufanayo. I-Premium inemisebenzi eminingi efana ne-parallel futhi akukho lutho oluphezulu lwesayizi yefayela ngalinye, ngakho-ke i-500-file batch iphele ngemizuzu endaweni yamahora angama-10.

Ingabe i-AMR izogcina isilinganiso esifanayo sesampula njenge-AAC?

Ngokuzenzakalela yebo (48 kHz AAC → 48 kHz AMR). Uma ufuna uku-downsample ukuhambisana (isibonelo 96 kHz → 44.1 kHz yokushaya i-CD) isinqumo esiphezulu sesampula-rate sikwenza lokhu ngekhwalithi ephezulu yoku-resamply.

Ingabe ngizolungisa umsindo ku-AAC kuya ku-AMR?

Yebo — ukhetho lokujwayelekile-lokujwayelekile lufaka ITU-R BS.1770 / EBU R128 ukujwayelekile ku AMR kuphuma, libhekisa ku -14 LUFS (isizinda sokushayela), -16 LUFS (isizinda sepodcast), noma -23 LUFS (isizinda sencwadi yezwi). Kuhle uma uguqula amabhayisikobho ngezinga lokuphatha elihlukile.

Ingabe i-AMR izodlala kwi-stereo yemoto yami / i-iPod / i-app yencwadi yezwi?

MP3 idlala emhlabeni wonke. AAC idlala ku Apple, ngaphezu Android, Sonos. FLAC idlala ku Sonos ne Android, ngaphezu kahle ku iPods edlule. M4B audiobooks dlala ngesigaba ukuzulazula ku iOS Books, Audiobookshelf, kanye Smart Audiobook Player. Izinto ezikhethwayo ezisezingeni eliphezulu zifaka idivayisi imise.